Holland Secret - Grow - Plant Fertilizer

Brand: Future Harvest

Product Code: FHD-0700221

Availability:In stock

$13.99 13.99

Available Options


The best fertilizer for plants

Looking for the best fertilizer for plants? Well you’ve found it!

Introducing the Holland Secret 3-part plant fertilizer.

This 3-part fertilizer helps your plants avoid deficiencies by delivering all 12 essential micro and macro nutrients, and is pH buffered for ease of use, which means less time spent diagnosing plant diseases and more time spent harvesting a large crop.

Holland Secret is regarded as the penultimate plant fertilizer for its ease of use and can be used with any grow medium in any situation, and any part of the grow cycle. And unlike other plant fertilizers, you don’t have to worry about clogged lines, thanks to the technicians at Future Harvest, Holland Secret is sediment and urea free.

Grab the best fertilizer for plants today!



Available sizes shown from 500mL, 1L, 4L, 10L, 20L, 208L, totes of Grow


Key Features: 

  • This powerful plant fertilizer automatically buffers pH to acceptable levels for growth.
  • 100% sediment free! Which means no precipitation of nutrient salts falling out of solution and becoming unavailable to your plants.
  • Another thing that makes Holland Secret the best fertilizer for plants is that it works well for novices and experts alike. As well as being very easy to use, this plant fertilizer gives precise control over feeding schedules.  
  • Extremely low salt index and only the finest raw materials used.
  • Change the ratio between the three bottles to control nutrition for each specific stage of plant growth, as a professional grower would do. 
  • It can be used as a stand-alone without additives or as a complete feed program.




Future Harvest Holland Secret Grow Guaranteed Analysis

** Holland Secret Grow, Micro and Bloom are designed to be used in conjunction with one another, and never as stand alone nutrients. **

Additional Info

It’s important to use all three parts of the Holland Secret 3-Part plant fertilizer in tandem with one another. Using only one or two parts of the three, like Grow and Bloom without Micro for instance, means your plants will miss out on all the nutrients they need to grow and could potentially put them at risk of deficiencies.

And if you’re looking for more reasons to use the best fertilizer for plants and vegetables here are two. It’s CFIA certified – meaning it meets all the regulatory standards – and it has the added benefit of being able to be used as a foliar spray, so if you want to spray away, you can.

For foliar spray recipes that include the Holland Secret 3-part plant fertilizer, simply click here to go our blog article on foliar spray recipes.

And to get free shipping on the best fertilizer for plants and vegetables, simply spend over $100 CAD (around $75 USD) on any order.

Product Comparison:

  • Green Planet: GP3 Grow
  • GroTek: Precision Grow
  • Emerald Harvest: Grow







Customer Reviews

Based on 4 reviews Write a review


The Future Harvest online store ships all over Canada and the United States from Canada. We also have a distributor in the United Kingdom, The Growers Wholesale. CLICK HERE for a list of our distributors. 

All orders are processed within 1 business day.

Your order will be marked as fulfilled from the moment it’s been boxed up in the warehouse awaiting for the courier to pick it up. Once your order has been fulfilled, you will receive an email with your tracking number. Your tracking details will appear once the courier has processed the package.

We deliver packages through the following couriers: Canada Post, UPS, Canpar, and Purolator. The courier will be chosen based on the fastest estimated shipping time. 

We currently only ship to PO Boxes across Canada via Canada Post. If you enter a PO box for a US order, we will contact you to provide an alternative delivery address.





In Canada, we offer free shipping over $100 CAD before tax. In the United States, we offer free shipping over $150 CAD. 



All Future Harvest online orders will be shipped out in branded boxes. If you would like discreet shipping, simply request for it in the shipping notes section on the cart page. 



Shipping Times
British Columbia 
2-3 business days 
& Manitoba 
3-5 business days 
Ontario, Quebec,
Newfoundland & Labrador,
& PEI 
3-7 business days 
USA 7-15 business days 



Nutrients can freeze when exposed to cold temperatures. We protect your packages by shipping liquid nutrients with heat packs and faster shipping methods during the winter months. Depending on courier, your package may not be sent out until the following Monday to ensure it does not sit in a cold warehouse over the weekend. If your nutrients freeze, simply mix the entire bottle with an equal amount of hot water (preferably reverse osmosis or distilled water) and double your dosage. For detailed information CLICK HERE

Occasionally, our online inventory is inaccurate. In the case we cannot fulfill your order due to an item being out of stock, we will contact you within 24 hours whether to cancel the order or wait for the item to be back in stock. 

We reserve the right to cancel & refund any order where we cannot economically ship to. If this happens you will be refunded in full and notified of the issue. 


Refund Policy


Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. 

To complete your return, we require a receipt or proof of purchase.

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late Refunds
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at marketing@futureharvest.com.

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at marketing@futureharvest.com and send your item to: 725 Evans Court, Kelowna, British Columbia, CA, V1X 6G4.

To return your product, you should mail your product to: 725 Evans Court Kelowna British Columbia CA V1X 6G4

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the original cost of shipping will be deducted from your refund, unless you the customer paid the original shipping.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.



Ask a Question
  • Can you use the Grow/Bloom/Micro system for foliar feeding?

    Hi Mike,


    Yes you can use our Holland Secert Miccro, Grow and Bloom for foliar feeding. All our nutrients and additives will work as a foliar spray except Royal Black - Royal Black takes time to break down before it can become available to the plant. We do not recommend it for use as a foliar spray as it works best in soil. 


    Thanks, and have a great day.

  • Will this sit mixed up in a tank for an auto pot system for a week with oxygen added .?

    Yes it will be good for up to 2 weeks. We recommend having something agitating the water.

  • I run a dwc, when the water level gets low in my buckets in between changes should I add just water or water nutrient mix

    This is personal preference! Some growers like to let their plants suck up all the nutrients and only add water so they can do their water flush / change without tossing any nutrients. Other growers like to continually top up their nutrient solution. If you choose to top up your nutrient solution make sure your pH and PPMs are within range.

  • With your feed schedule it says you can use micro,grow,bloom and other added nutrients all together so superb,royal gold,plantavillin,carbo blast,prop o gator,royal black. All of these are ok with micro, grow and bloom ?

    Yes! Our entire line of additives are compatible with Holland Secret Micro, Grow, and Bloom.

  • Do we mix all 3 grow micro and bloom together or are they to be fed separately at different stages?

    Micro, Grow, and Bloom are meant to be fed together in different doses throughout your plants life cycle. Check out our feeding schedule under DOWNLOADS for the exact measurements.

  • Why is the grow so low in nitrogen? Also when growing outside what ratio of grow to gallon of water?

    Holland Secret Micro, Grow, and Bloom are meant to be used together. The combined NPK levels of the three fertilizers will provide your plant will all the essential micro and macro nutrients it needs. As ratios change every week, you can refer to our feed schedule found under DOWNLOADS. All measurements are in mL's per Gallon.

  • Is the system a daily or weekly feeding

    It is a daily feeding. But we recommend flushing with straight pHed water every third feeding.

  • I have seeing that are 3 weeks old, but I just bought the 3 part system today. Should I start with week 1 measurements, or should I jump straight to week 3?

    Hello, thanks for reaching out.
    I would start with a half strength week 1 feeding to ease your plants into the nutrients.
    Acouple feedings at half strength is safe, then feel free to bump the ratio up to the recommened dosages.

    If you have any more questions please feel free to ask.

  • Is it wise to mix a big batch for future watering

    You could mix a batch for future watering no problem, I wouldn't leave it longer then 2 weeks.
    It would be best if you had an air stone or some sort of device agitating the water aswell.

    To be extra safe I would check the pH of the solution before using it.

    Best regards

  • looking on your analaysis page, why are so any ellements not listed and all show same ellements in 3 diff parts of foods, and why do all your foods have added pesticides listed.

    Hey, great quesitons.
    A lot of the information that we put out has regulatory agencies in mind.  One of the problems we are faced with is that some of the nutrients we have in our products fall under the minimum amounts permitted by these agencies. 


    As for the pesticides, these are maybe relevant for many of our customers but are for the large licensed producers that we serve.   The pesticides listed are the 96 specific ones that Health Canada tests for in Cannabis and these types of customers feel more assured that their end product will be free of these if we test for them.

  • Will the nutrients be effective if they got cold enough to be slush consistency but not frozen solid.

    Hey Carson, thanks for reaching out. I had just talked to our Biochemist, he had said the nutrients should be fine. However if you want to pour some into a clear container and notice any crystallization It would suggest some of the nutrients salts have fallen out and wouldn’t be good to use. If you have any other questions please let us know Best regards and happy growing -Jesse

  • When mixing up nutrients it’s says allow additional mixing times between each additional product I’ve been giving about ten minutes is this too long or not long enough Thank you My plants are thriving using your products

    Hello George, thanks for choosing Future Harvest Nutrients. 
    I am glad to hear your plants are thriving with our product line!

    It is important to mix up the Micro before the other additives go into the water reservoir.
    I would recommond waiting atleast 2 minutes if you are mixing it well, then adding additional product.

    Hope this helps, if you have any other questions feel free to message on us here
    Thanks & happy growing 

  • Do I need to flush plants using this product? Or can I continue to use all through the flower development?

    As a rule of thumb, we always advise our users to flush your medium with pH adjusted water every 3rd watering. Advanced growers will use other techniques to monitor nutrient levels in their medium to dictate when to do a water flush to lower the levels back to optimum range.

  • What is the shelf life of your Holland Secret ? How do I know if it has expired and is no longer serving it’s purpose ?

    Generally, all liquid fertilizers have an expiry of around 8-10 years depending on the conditions of storage. Also, fertilizers degrade over time so using a bottle that is 7 years old is less effective than a bottle that is 2 years old. We recommend our customers to use up their product within the first 2 years to get the best results. I've never personally seen a bottle that is 8-10 years old but I've been told you will notice some crystallization in older product. 

  • Are your nutrients going to need anything else if I use ro water for my special ‘’tobacco ‘’

    No, you do not need anything else! Our nutrients is all you need to add to your RO water to get your "tobacco" going!